% 文档类(模板)
\documentclass{ctexart}
% 导言区

% 正文区(有且只能有一个)
\begin{document}
Hello \LaTeX.
{\small The small and Romans ruled}
e small and {\bfseries bold Romans ruled}
{\Large all of great big great big Italy.
all of {\itshape Italy}.}

\end{document}
